3.1 Review Crossword

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Across
  1. 2. parasite
  2. 4. chemical digestion
  3. 6. requires a host
  4. 8. what type is it
  5. 13. protozoa
  6. 14. infectious
  7. 15. mushrooms
  8. 16. abnormal infectious protein
  9. 17. keeps sickness away
Down
  1. 1. direct or indirect?
  2. 3. defends your body
  3. 5. how it get outs
  4. 7. who gets it
  5. 9. how it spreads
  6. 10. how it gets in
  7. 11. stimulates an immune response
  8. 12. stimulates defense